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/**
* @file CrsfParser.hpp
*
* Parser for incoming CRSF packets
*
* @author Chris Seto <chris1seto@gmail.com>
*/

#pragma once

#include <stdbool.h>
#include <stdint.h>

#define CRSF_CHANNEL_COUNT 16

struct CrsfChannelData_t {
	float channels[CRSF_CHANNEL_COUNT];
};

struct CrsfLinkStatistics_t {
	uint8_t uplink_rssi_1;
	uint8_t uplink_rssi_2;
	uint8_t uplink_link_quality;
	int8_t uplink_snr;
	uint8_t active_antenna;
	uint8_t rf_mode;
	uint8_t uplink_tx_power;
	uint8_t downlink_rssi;
	uint8_t downlink_link_quality;
	int8_t downlink_snr;
};

struct CrsfParserStatistics_t {
	uint32_t disposed_bytes;
	uint32_t crcs_valid_known_packets;
	uint32_t crcs_valid_unknown_packets;
	uint32_t crcs_invalid;
	uint32_t invalid_known_packet_sizes;
	uint32_t invalid_unknown_packet_sizes;
};

enum CRSF_MESSAGE_TYPE {
	CRSF_MESSAGE_TYPE_RC_CHANNELS,
	CRSF_MESSAGE_TYPE_LINK_STATISTICS,
};

typedef struct {
	CRSF_MESSAGE_TYPE message_type;

	union {
		CrsfChannelData_t channel_data;
		CrsfLinkStatistics_t link_statistics;
	};
} CrsfPacket_t;

void CrsfParser_Init(void);
bool CrsfParser_LoadBuffer(const uint8_t *buffer, const uint32_t size);
uint32_t CrsfParser_FreeQueueSize(void);
bool CrsfParser_TryParseCrsfPacket(CrsfPacket_t *const new_packet, CrsfParserStatistics_t *const parser_statistics);